识别信号
- Candidate optimizes getIndex using cumulative multipliers instead of iterating over the entire sequence.
- Candidate identifies that naive full sequence updates will exceed time limits with 10^5 operations.
解题流程
- 1. 明确窗口/状态定义
- 2. 更新状态并维护约束
- 3. 用边界样例验证
常见失分点
- Updating every element on addAll or multAll leads to TLE for large sequences.